BA5956FM_11

1 /11 STRUCTURE PRODUCT SERIES TYPE PACKAGE OUTLINES POWER DISSIPATION BLOCK DIAGRAM APPLICATION TEST CIRCUIT ◎ Features : : : : : : : : Silicon Monolithic Integrated Circuit Power driver for CD/DVD player BA5956FM Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 ○ 2 channel current feedback type driver, 3 channel BTL driver. ○ Employs the HSOP-M36 power package for compaction. ○ Has a wide dynamic range. ○ The thermal shutdown circuit is built. ○ Mute circuit is built in. ( except for loading driver ) ○ A power supply is divided into 4 systems. 【PreVcc, PowVcc1=actuator, PowVcc2=loading motor, PowVcc3=sled motor, spindle motor】 ◎Absolute Maximum Rating (Ta=25℃) Item Supply voltage Power dissipation Maximum output current Operating temperature range Storage temperature range Symbol PreVcc,PowVcc Pd Iomax Topr Tstg Rating 18 2.2*1 1*2 -35～85 -55～150 Unit Ｖ Ｗ Ａ ℃ ℃ *1 Rating for 70 ㎜×70 ㎜(size), 1.6 ㎜(thickness), copper foil occupation ratio less than 3％, And use of glass-epoxy substrate. When this IC is used above Ta=25℃, note that this rating decreases 17.6mW each time the temperature increases 1℃. *2 This rating of permissible dissipation must not exceed ASO. ◎Operating Supply Range PreVcc PowVcc 4.5 ～ 14 （Ｖ） 4.5 ～ PreVcc（Ｖ） REV. B 2 /11 ● ELECTRICAL CHARACTERISTICS （Unless otherwise noted, Ta=25℃, PreVcc=PowVcc3=12V, PowVcc1=PowVcc2=5V, BIAS=1.65V, RL=8Ω, Rd=0.5Ω,C=100pF） Parameter Quiescent current Voltage for mute ON Voltage for mute OFF < Actuator driver > Output offset current Maximum output voltage Trans conductance Common mode input range Input offset voltage Input bias current Low level output voltage Output source current Output sink current < Sled motor driver > Output offset voltage Maximum output voltage Closed loop voltage gain < Loading motor driver > Output offset voltage Maximum output voltage Gain error by polarity < Spindle motor driver > Output offset voltage Maximum output voltage Gain error by polarity VOOFSP VOMS GVSP VOOFLD VOMLD GVLD VOOFSL VOMSL GVSL IOOF VOM Gvc VICM VIOFOP IBOP VOLOP ISO ISI symbol IQ VMON VMOFF MIN TYP MAX Unit mA V V mA V A/V V mV nA V mA mA mV V dB mV V dB mV V dB VIN=±1.65V VIN=BIAS±0.2V VIN=±1.65V VIN=BIAS±0.2V VIN=±1.65V VIN=±0.2V VIN=±1.65V VIN=BIAS±0.2V Condition Test circuit － 0 2.0 -6 3.6 1.5 0.4 -6 － － 0.5 0.5 -50 8.0 17.6 -50 3.5 15.7 -50 8.0 15.7 34 － － 0 4.0 1.8 － 0 － 0.2 － － 0 9.5 19.6 0 4.0 17.7 0 9.5 17.7 44 0.5 － 6 － 2.1 10.5 6 300 0.5 － － 50 － 21.6 50 － 19.7 50 － 19.7 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 Figure.5 < Sled motor driver pre OPAMP & OPAMP> ○ This product is not designed for protection against radioactive rays. REV. B 3 /11 REV. B 4 /11 Electrical characteristic curves 3 Pd / W 2 1 0 0 25 50 75 100 125 150 AMBIENT TEMPERATURE, Ta /℃ Pd；Power Dissipation Rating for 70mm × 70mm(size), 1.6mm(thickness), copper foil occupation ratio less than 3%, and use of glass-epoxy substrate. Figure 2 POWER DISSIPATION REV. B 5 /11 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 PVcc3 PreVcc PVcc2 10K 20K PGND Thermal shut down 10K +×2 +20K 7.5K 10K 7.5K MUTE 20K 1 2 3 4 5 ● Pin description No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Pin name LDBIAS BIAS FCIN CFCerr1 CFCerr2 MUTE TKIN CTKerr1 CTKerr2 PreGND PVcc1 VNFFC PGND1 VNFTK VOTK(－) VOTK (+) VOFC(－) VOFC (+) Input for bias voltage (Loading driver) Input for bias: voltage Input for focus driver Connection with capacitor for error amplifier 1 Connection with capacitor for error amplifier 2 Input for mute control Input for tacking driver Connection with capacitor for error amplifier 1 Connection with capacitor for error amplifier 2 GND for pre-drive block Vcc for power block of actuator Feedback for focus driver GND for power block of actuator Feedback for tracking driver Inverted output of tracking Non inverted output of tracking Inverted output of focus Non inverted output of focus notes) Symbol of + and ‐ (output of drivers) means polarity to input pin. (For example if voltage of pin3 is high , pin18 is high.) -+ ++10K 7.5K -+ Spindle Driver 25K Sled Driver Loading Driver -+ -+ -+ 15K 10K PVcc2 PVcc3 PVcc1 Det. Amp. ×2 7.5K PreGND PVcc1 PGND Actuator Driver Actuator Driver 6 7 8 9 10 11 12 13 14 15 16 17 18 Unit of resistance:  Figure 3 BLOCK DIAGRAM Pin description No 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Pin name VOLD (－) VOLD (+) VOSL (－) VOSL (+) VOSP (－) VOSP (+) PGND2 PVcc2 PVcc3 PreVcc SPIN OPOUTSL OPINSL(－) OPINSL (+) LDIN OPOUT OPIN(－) OPIN (+) Pin descrition Inverted output of loading Non inverted output of loading Inverted output of sled Non inverted output of sled Inverted output of spindle Non inverted output of spindle GND for power block of loading, sled and spindle driver Vcc for power block of loading driver Vcc for power block of sled and spindle driver Vcc for pre-drive block Input for spindle driver Sled Pre OP amplifier output Sled Pre OP amplifier invert input Sled Pre OP amplifier non invert input Input for loading driver OP amplifier output OP amplifier invert input OP amplifier non invert input REV. B Power Supply for -com 10k 3 state type 0.1m 10k Loading M Spindle Motor Sled Motor Loading Motor Spindle 10K Sled Thermal shut down 10K Figure 4 APPLICATION PVcc3 PreVcc PVcc2 +×2 +10K 7.5K 20K 7.5K 1 2 3 4 5 BIAS Tracking Coil Focus Tracking Focus Coil -+ -+ -com 36 35 34 33 32 31 30 29 28 27 26 25 24 23 M M MUTE 22 21 20 19 PGND 20K Spindle Driver Sled Driver Loading Driver -+ 25K -+ 15K 10K PVcc2 PVcc3 -+ REV. B Loading BIAS +MUTE PVcc1 Det. Amp. ×2 +- 20K 10K 7.5K Actuator Driver 7.5K Actuator Driver PreGND PVcc1 PGND SERVO 6 7 8 9 10 11 12 13 14 15 16 17 18 Rd Rd 6 /11 7 /11 8 8 8 OPAMP OUT INM INP VIN3 OPAMP OUT INM INP VIN5 12V IQ 12V 5V Vo5 Vo4 Vo3 36 35 34 33 32 31 30 29 28 PreVcc 27 26 10K 25 PGND 20K 24 23 22 21 20 19 PVcc3 PVcc2 Spindle Driver Sled Driver Loading Driver PVcc2 PVcc3 Thermal shut down 10K 25K 10K 15K PVcc1 7.5K ×2 20K 7.5K 20K 10K 7.5K ×2 7.5K Det. Amp. PreGND PVcc1 PGND Actuator Driver Actuator Driver MUTE 1 2 VIN1 10K 3 4 5 6 VIN2 7 8 9 10 11 12 13 14 15 0.5 16 Io 17 18 Io Vo1 1.65V 1.65V 100pF MUTE 100pF 5V 8 0.5 8 100H Vo2 100H INP VOOF INM VBOP OUT 4 2 SW1 3 2 1M 1 1M VBOP 1 SW3 10k 10k 1 BIAS SW2 VINOP 1 2 SW4 IOP 2 VOOP OPAMP Figure5 TEST CIRCUIT ● Measurement circuit switch table REV. B 8 /11 Symbol Switch SW1 SW2 SW3 SW4 VIN1 VIN2 1.65V 1.65V 1.65V 1.65V ±1.65V ±0.2V Input VIN3 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V ±1.65V ±0.2V VIN5 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V ±1.65V ±0.2V VINOP － － － Condition MUTE Measureme nt point IQ 1 1 2 1 1.65V VMON 1 1 2 1 1.65V VMOFF 1 1 2 1 1.65V IOOF 1 1 2 1 1.65V VOM ±1.65V 1 1 2 1 Gvc ±0.2V 1 1 2 1 IBOP 2 1 3 1 1.65V VIOFOP 1 1 2 1 1.65V VOLOP 1 2 1 1 1.65V ISO 1 1 2 2 1.65V ISI 1 1 2 2 1.65V VOOFSL 1 1 2 1 1.65V VOMSL 1 2 1 1 1.65V GVSL 1 2 1 1 1.65V VOOFLD 1 1 2 1 1.65V VOMLD 1 1 2 1 1.65V GVLD 1 1 2 1 1.65V VOOFSP 1 1 2 1 1.65V VOMS 1 1 2 1 1.65V GVSP 1 1 2 1 1.65V 2.0V 2.0V 0.5V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V VIN5=0, 3.3V VIN5=1.45, 1.85V VIN3=0, 3.3V VIN3=1.45, 1.85V VINOP=0, 3.3V VINOP=1.45, 1.85V VIN1,2=0, 3.3V VIN=1.45, 1.85V IQ IQ IQ IO VO1,2 IO VBOP VOOF VOOP VOOP VOOP VO4 VO4 VO4 VO3 VO3 VO3 VO5 VO5 VO5 － － － 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V 1.65V － － 12V － － － ±1.65V ±0.2V － － － 1.65V 1.65V 1.65V － － － ● EQUIVALENT CIRCUIT OF TERMINALS REV. B 9 /11 10k 2k 10k 10k 10k 31,32 PIN 2k 35,36 PIN 34 PIN 10k OP amplifier input OP amplifier output Driver input 3,7,29,33 PIN REV. B Pre OP amplifier input for sled driver （ OP amplifier output for sled driver & driver input ） 30 PIN inverted output for focus and tracking driver 15,17 PIN VREF 1 0/11 50k 50k 25k 75k 1,2 PIN 6 PIN 15k 10k 10k 10k 10k (+) 16,18,20,22,24 PIN (-) 19,21,23PIN 20k 7.5k 12,14 PIN 4,8 PIN 7.5k Output for driver Feedback for focus and tracking driver Connection with capacitor for error amplifier 1 ●Notes on use REV. B Bias input Mute Connection with capacitor for error amplifier 2 5,9 PIN 1 1/11 1. Thermal-shut- down circuit built-in. In case IC chip temperature rise to 175℃ (typ.) thermalshut-down circuit operates and output current is muted. Next time IC chip temperature falls below 150℃ (typ.) In case mute-pin voltage under 0.5V or opened, quiescent current is muted. Mute-pin voltage should be over 2.0V for normal application. In case supply voltage falls below 3.5V (typ.), output current is muted. Next time supply voltage rises to 3.7V(typ.), the driver blocks start. Bias-pin (pin1 and pin2) should be pulled up more than 1.2V. In case bias-pin voltage is pulled down under 1.0V (typ.), output current is muted. In case a capacitance load is connected to the OP amplifier output, the amplifier phase margin decreases, which causes the peak or oscillator. When connecting such load, insert a resistance in series between the output and the capacitance load and take a full consideration for frequency characteristics, to prevent problems during practical use. Insert the by-pass capacitor between Vcc-pin and GND-pin of IC as possible as near (approximately 0.1F). Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect these to the external GND Avoid the short-circuits between: Output pin and Vcc Output pin and GND Output pins If this caution is ignored, IC damage may cause smokes. Examine in consideration of operating margin, when each driver output falls below sub-voltage of IC (GND) due to counter-electromotive-force of load. 2. 3. 4. 5. 6. 7. 8. 9. < Supplement > Current feedback driver Trans conductance (output current/input voltage) is shown as follws. gm  1 Rd  RWIRE ( A／V ) RWIRE: ≒0.075（±0.05） Typ.）:Au wire （ REV. B Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. 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